Copyright in the classroom

Copyright in the classroom is taken very seriously and I think it should be. It is not that hard to paraphrase a few sentences if you want to use the ideas of other people. I think that people should not be able to just use other people's work without citing it first because those people who originally wrote it aren't getting any credit for their work. It's unfair for the people or originally wrote the work if people don't cite or paraphrase. Copyrighting is somewhat and should be a very serious crime.